
Hallmarks

Metalware Plant No. 1 - "M12" - 1962

Metalware Plant No. 1 - "M10" - 1960

Metalware Plant No. 1 - "M13" - 1963

Moscow Special Alloys Processing Plant …

Moscow Watch Repair Plant "Mosremchas" …

Metalware Plant No. 1 - "M11" - 1961

Special Alloys Processing Plant - "Z₁S"…

Metalware Plant No. 1 - "M15" - 1965

Moscow Special Alloys Processing Plant …

Special Alloys Processing Plant - "Z₃S"…